Which standard below does NOT specify fiber optic cabling as its
physical media?
A.
1000BaseSX
B.
100BaseFX
C.
1000BaseCX
D.
1000BaseLX
Explanation:
1000BaseCX refers to 1000Mbps baseband copper cable, using two
pairs of 150 ohm balanced cable for CSMA/CD LANs.
* 100BaseFX, specifies a 100 Mbps baseband fiber optic CSMA/CD
LAN. Answer c, 1000BaseLX, specifies a 1000Mbps CSMA/CD LAN
over long wavelength fiber optics.* 1000BaseSX, specifies a 1000Mbps CSMA/CD LAN over short wavelength fiber optics.